:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #5b21b6;
    --color-accent: #fbbf24;
    --color-surface: #0f0f1a;
    --color-text: #ede9fe;
    --rgb-primary: 124,58,237;
    --rgb-accent: 251,191,36;
    --radius-sm: 0px;
    --radius-md: 2px;
    --radius-lg: 4px;
    --radius-xl: 6px;
    --shadow-sm: 2px 2px 0px rgba(124,58,237,.3);
    --shadow-md: 4px 4px 0px 0px rgba(124,58,237,.45), 4px 4px 0px 1px rgba(251,191,36,.15);
    --shadow-lg: 4px 4px 0px 0px rgba(251,191,36,.5), 4px 4px 0px 1px rgba(124,58,237,.35);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.15s cubic-bezier(0.2, 0, 0, 1);
    --heading-weight: 600;
    --body-line-height: 1.6;
}

body { color: var(--color-text); background-color: var(--color-surface); line-height: var(--body-line-height); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: #fbbf24; text-shadow: 0 0 12px rgba(251,191,36,.35), 0 0 4px rgba(124,58,237,.4); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); border: 2px solid rgba(124,58,237,.35); background-color: rgba(15,15,26,.85); backdrop-filter: blur(6px); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); border: 2px solid #fbbf24; box-shadow: 3px 3px 0px 0px rgba(251,191,36,.5); }
a:not([class]) { color: var(--color-accent); transition: var(--transition); text-shadow: 0 0 6px rgba(251,191,36,.3); }

/* ========== Section Layout Variants ========== */

/* news: featured-left */
/* 左大右小 (1大+2小) */
                .news-grid { display: grid; grid-template-columns: 2fr 1fr; grid-template-rows: auto auto; gap: var(--space-gap); }
                .news-grid > *:first-child { grid-row: span 2; }

/* features: grid-3 */
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* hero: minimal */
.hero { padding: 2rem 0; } .hero-content { max-width: 560px; }

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list { display: flex; overflow: hidden; } 
                .testimonial-list > * { flex: 0 0 100%; }

/* partners: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 20s linear infinite; }
                @keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }

/* stats: big-number */
/* 大数字居中 */
                .stats-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }
                .stats-grid .stat-value { font-size: 3rem; color: #fbbf24; text-shadow: 0 0 20px rgba(251,191,36,.55), 0 2px 0 rgba(124,58,237,.6); }

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
            .page-main { max-width: 1200px; margin: 0 auto; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-4px); box-shadow: 4px 4px 0px 0px rgba(251,191,36,.7), 6px 6px 0px 1px rgba(124,58,237,.5); border-color: rgba(251,191,36,.7); }
a:not([class]):hover { color: #fde68a; text-shadow: 0 0 10px rgba(251,191,36,.6); }

/* Responsive */
@media (max-width: 1024px) {
    .news-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .feature-list { grid-template-columns: repeat(2, 1fr) !important; }
    .partner-grid { grid-template-columns: repeat(3, 1fr) !important; }
    .stats-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .hero-inner { grid-template-columns: 1fr !important; }
}
@media (max-width: 640px) {
    :root { --space-section: 2rem; --space-card: 1rem; --space-gap: 0.75rem; }
    .news-grid { grid-template-columns: 1fr !important; }
    .feature-list { grid-template-columns: 1fr !important; }
    .faq-list { grid-template-columns: 1fr !important; }
    .testimonial-list { column-count: 1 !important; }
    .partner-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .stats-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .cta-inner { grid-template-columns: 1fr !important; }
}